<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button"> {{this.currentCity}}</div>
            </div>
          </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper"
					 v-for="item of hot" 
					 :key="item.id"
					 @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"
					  @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations} from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
	computed: {
		...mapState({
			currentCity: 'city'
		})
	},
	methods: {
		handleCityClick (city) {
			this.$store.commit('changeCity',city)
			this.changeCity(city)
			this.$router.push('/')
		},
		...mapMutations(['changeCity'])
	},
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper,{
			click: true
		})
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>
<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
  .border-topbottom
    &:before
      border-color #ccc;
    &:after
      border-color #ccc;
  .border-bottom
    &:before
      border-color #ccc;
  .list
    overflow hidden;
    position absolute;
    top 1.58rem;
    bottom 0;
    left 0;
    right 0;
    .title
      line-height .54rem;
      background #eee;
      padding-left .2rem;
      color #666;
      font-size .26rem
    .button-list
      overflow hidden ;
      padding .1rem .6rem .1rem .1rem;
      .button-wrapper
        float left;
        width 33.33%;
        .button
          margin .1rem;
          padding .05rem 0;
          text-align center;
          border  .02rem solid #ccc;
          border-radius .1rem;
    .item-list
      .item
        line-height .76rem;
        padding-left .2rem
</style>
